# CVE-2025-40015: linux: In the Linux kernel, the following vulnerability has been resolved:  media: stm32-csi: Fix dereference before NULL ch...

CVE-2025-40015 is fixed in linux on 1 platform by DEBIAN-CVE-2025-40015 (version 6.16.11-1), released October 20, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-40015
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0024
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 20, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  media: stm32-csi: Fix dereference before NULL check  In 'stm32_csi_start', 'csidev->s_subdev' is dereferenced directly while assigning a value to the 'src_pad'. However the same value is being checked against NULL at a later point of time indicating that there are chances that the value can be NULL.  Move the dereference after the NULL check.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 6.16.11-1 | [DEBIAN-CVE-2025-40015](https://patchblox.com/security/data/fix/linux/debian-cve-2025-40015.md) | Oct 20, 2025 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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